CN1944798A - Low temperature construction method for bridge support grouting - Google Patents
Low temperature construction method for bridge support grouting Download PDFInfo
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- CN1944798A CN1944798A CN 200610145116 CN200610145116A CN1944798A CN 1944798 A CN1944798 A CN 1944798A CN 200610145116 CN200610145116 CN 200610145116 CN 200610145116 A CN200610145116 A CN 200610145116A CN 1944798 A CN1944798 A CN 1944798A
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Abstract
The low temperature construction method for grouting bridge support in the temperature lower than 10 deg.c, especially lower than 0 deg.c, includes heating the support bed stone in the pier top, pier anchor hole, lower bridge bearing steel plate, screw and sleeve, mortar stirrer, mortar pipe, etc partially or completely, taking heat insulating measures, and heating and maintaining the grouted mortar with heating bag and heat insulating jacket. The present invention has homogeneous heating of the mortar in and after grouting, and can ensure the global strength and antifreeze performance of anchoring mortar.
Description
Technical field
The present invention relates to a kind of bridge support grouting technology job practices at low temperatures, a kind of job practices and technology that prevents that mortar from hardening slowly owing to temperature is low, can not harden or be damaged by frost after cast of more specifically saying so.
Technical background
At present, China has begun the Large scale construction high-speed railway, and a large amount of new technologies and new method have been adopted, and in order to increase work efficiency, speed up the work, generally adopt the bridge that is prefabricated in the factory, a slice bridge generally weighs 900 tons, build a bridge on the bridge pier of building well by erecting machine, by bridge pad bridge and bridge pier are linked together, bridge pad is connected by high-strength bolt with bridge, and for the needs of the height of adjusting bridge, by cast-in-site bearing high-strength grouting mortar bridge pad and concrete pier are fixed together, and the mortar thickness of cast is generally about 2cm-3cm, therefore whether the mortar of cast can possess sufficient intensity and have very crucial effect.
As shown in Figure 1, bridge erection method according to high-speed railway, generally between the bearing pad stone 2 of concrete pier base 1 and concrete-bridge 3, be provided with neoprene bearing 4, concrete pier base 1 and bearing pad stone 2 thereof are built at the scene and are formed, concrete-bridge 3 can prefabricatedly also can cast-in-placely be made, in concrete-bridge bottom fixedly behind the neoprene bearing 4, lift on the bearing pad stone 2 of concrete pier base 1, bearing pad stone 2 is reserved with anchor hole at four jiaos of places of end face, the lower steel plate of neoprene bearing 4 is provided with the bolt that inserts anchor hole, bolt periphery is provided with sleeve, after bridge is in place, just pouring into a mould mortar is consolidated bolt and sleeve and bearing pad stone 2, last bridge 3, neoprene bearing 4, concrete pier base 1 just all links together, as shown in Figure 2, the grouting template need be installed on bearing pad stone 2 during cast, can adopt prefabricated punching block 5, a bed thickness rubber leakproof bar 6 is established in the bottom surface, by expansion bolt 7 be fixed on bearing pad stone 2 top and, anchor hole and plane bearing pad stone can separately be poured into a mould, but the plane bearing pinner answers once-cast to finish, as shown in Figure 3, mortar pours in the space of bearing lower steel plate and pier bearing pad stone by mozzle, till observing grouting agent from punching block and base-plate peripheral clearance and all filling, after cast finishes, the mortar that will exceed base-plate is drawn out, floating, treat that intensity reaches 20MPa after, remove steel form, remove the interim jack that supports, erection support protection coaming plate.
Owing to mainly be connected between bridge and the bridge pier by bearing, therefore the quality of casting quality will directly determine the safe in utilization and application life of bridge, and concrete coagulating property has determined this important process process will inevitably be subjected to the influence of environment, when under hot conditions, constructing, the degree of mobilization loss of slurry is very fast, generally when being higher than 35 ℃, temperature just needs to adopt cooling measure, as sunshade, watering, the preparation frozen water is as mixing water or the like, solve than being easier to comparatively speaking, and when under cryogenic conditions especially subzero temperature condition, constructing, tend to cause bridge erection speed slowly or can not set up, mainly be owing to there is not effective low temperature construction method, mortar after present heating and anti-freezing technology mostly adopts electric blanket to cast carries out maintenance or heating, but because general electric blanket power is less, absorb steam easily, and with extraneous rapid heat dissipation, can only heat by the mode of convection current or radiation, all inconvenience is heated the bridge pad billet, and the heating position is limited, the bulk strength and the anti-freezing property at each position of anchorage mortar can not be guaranteed, huge hidden danger will be buried the overall security of bridge.
Summary of the invention
At the deficiency that prior art exists, the purpose of this invention is to provide a kind of can the erecting bridge under low temperature or subzero temperature condition or the job practices of cast-in-place beam support grouting.
For achieving the above object, the technical solution used in the present invention is:
A kind of low temperature construction method for bridge support grouting, its processing step is as follows:
(1) at first bearing pad stone and anchor hole are preheated, it is preceding after watering on anchor hole and the bearing pad stone is moistening to set a roof beam in place, in each anchor hole, put into heating bag respectively, on whole bearing pad stone, place heating bag then, on the bearing pad stone heating bag, cover the high-temperature-resistant thermal-insulation material at last, as heat-preservation cotton, keep the heating bag temperature about 10 ℃～80 ℃, before the beam that falls, cut off the power supply, take out all heating bags then, and heat-preservation cotton continued covering and heat insulating, remove heat-preservation cotton when erection bolt and sleeve again;
(2) sleeve and the bolt to the bridge pad lower steel plate preheats, before the beam that falls, sleeve and bolt are put into muff, in muff, place heating bag then, keep the interior temperature of heating jacket between 10 ℃～80 ℃, in the mobile or erection process of beam, keep heating jacket in running order always;
(3) the bridge pad lower steel plate is heated, respectively heating bag is installed in the Si Jiaochu of bridge pad lower steel plate upper surface, and is fixed on the steel plate, coat insulation blanket then outside bridge pad, and begin heating, the temperature of heating bag is between 10 ℃～80 ℃;
When (4) stirring mortar, mixer is carried out heat tracing, and the mortar mozzle is heated or is incubated;
(5) stir slurry, use about 10 ℃～50 ℃ hot water to mix and stir material, the slurry out-of-machine temperature is advisable at 5 ℃～30 ℃, minimumly is not less than 1 ℃;
(6) cast, slurry stirring finishing back was poured into a mould in 30 minutes and is finished, and simultaneously with the plural die trial of mortar moulding of stirring, put into the muff test compressive strength in the different length of times;
(7) pouring into a mould follow-up the continuing that finish heats the bridge pad lower steel plate, the muff lower end that is fixed on the bridge pad is sturdy on bearing pad stone, coat the lower steel plate of bridge pad, the mortar of cast and the template of going along with sb. to guard him of pouring into a mould mortar fully, avoid the interior air of muff to communicate with the external world as far as possible, reduce thermal loss, by heating bridge pad lower steel plate, indirect heating mortar and all parts or the material that are coated on heat insulating material inside reach 5 ℃-60 ℃ curing temperature;
(8) it is above or possess the maintenance that anti-freezing property can be cancelled heating bag in the heating jacket to treat that die trial mortar compressive strength reaches 20MPa.
In the described step (1), heating bag is full of the volume of whole anchor hole more than 60%, and heating bag contacts with the crab-bolt hole wall, thereby anchor hole is evenly heated.
In the described step (4), after the beam body sets up, carry out slurry as early as possible and stir, mixer directly is placed on the Liang Tishang that is set up.
In the described step (4), the mixer outer lower portion is divided or is all twined heating tape or thin layer heating bag, heating tape and heating bag have temperature automatically controlled function, automatically cut off the power supply after surpassing certain temperature, temperature heats when not enough automatically, and at heating tape skin coating high-temperature-resistant thermal-insulation material, the temperature range of heating tape and heating bag is between 10 ℃-60 ℃.
In the described step (4), when stirring with 20 ℃～60 ℃ hot water injection's mixer and pipeline, with the outer field metallic walls of heating tape heating mixer, draft-tube diameter is advisable about 50-100mm, and after skin coats heat insulating material or twines heating bag, coating heat insulating material again, the temperature range of heating tape and heating bag is between 5 ℃-60 ℃.
In the described step (3), when the bridge pad lower steel plate was heated, heating bag was adsorbed on the steel plate by magnet, perhaps is fixed on the bridge pad with rope band.
Described heating bag and the temperature that is heated parts are no more than 80 ℃.
Described heating bag adopts the heating bag with temperature automatically controlled function, starts heating when temperature is hanged down automatically, and cutting off the power supply automatically when temperature is too high stops heating.
The Heat Conduction Material that charges in the described heating bag is a liquid, and heating source is sealed in the bag, and heating bag is soft deformable material, can adapt to the shape of anchor hole, bridge pad and bearing pad stone automatically.
The present invention is less than 10 ℃ during especially less than 0 ℃ in temperature, by positions such as pier end face bearing pad stone, anchor hole, bridge pad lower steel plate, bolt and sleeve, mortar mixer, mortar mozzle are partly or entirely preheated and the insulation measure, and pour into a mould the back by heating bag and muff are set at mortar, mortar after the cast is carried out the heat tracing maintenance, the method for constructing under low temperature or subzero temperature condition.
The present invention has following advantage:
1, can to all with in the mortar whipping process and the cast after the contacted position of mortar heat, and heating bag can be according to the shape that is heated parts from dynamic deformation, directly contact with the position that needs heating, heating bag is heater with liquid, evenly heat energy storage by liquid semiconductor in the bag, no corbel high temperature dot, each position homogeneous heating, maximum temperature is no more than 80 ℃, can be not inhomogeneous because of spot heating, and cause concrete cracking or cause the deterioration of bridge pad anticorrosive paint;
2, the heat after the concrete of bridge pad lower steel plate, pier bearing pad stone, anchor hole periphery, bolt and the sleeve heating plays the heating curing effect in mortar cast back to mortar;
3, all heater blocks or the temperature that is heated parts are no more than 80 ℃, can not cause the consequence of scald, burn to the constructor, and all electrical connections are and are tightly connected, and can not cause security incident because of electric shock;
4, heating source has temperature automatically controlled function, when temperature is low, starts heating automatically, and when temperature was too high, outage stopped heating automatically.
5, mainly heat by heat exchange pattern, firing rate is fast, save energy and time, the coefficient of heat conduction of steel concrete is 1.74W/ (m a ℃), the coefficient of heat conduction of steel plate is 45W/ (m a ℃), the coefficient of heat conduction of air is 0.025W/ (m a ℃), and the coefficient of heat conduction of steel concrete and steel plate is respectively 70 times, 1800 times of air, by higher 70 times and 1800 times respectively than the efficient that adds hot air to the efficiency of heating surface of concrete and steel plate heating;
6, when sealing heating can reduce because the concrete water evaporation that convection current or radiation heating mode cause, and causes adhesion strength is low and concrete is bigger between the mortar of the stylish cast of cast mortar and concrete drying shrinkage or cracking;
7, adopt the heating of low temperature heat exchange pattern, operate easily at the scene, and heating source is installed and withdrawn from all and simplify, and can reduce on-the-spot nurse and management, can not destroy heated parts because heat time heating time is long;
8, adopt 20 ℃～80 ℃ heating source,, also can the anticorrosive paint on heated concrete, steel plate or the steel plate not damaged, therefore can not cause quality accident even reach maximum temperature;
9, adopt full mode of heating, promptly all and the contacted position of mortar are all heated, can be really effectively freeze proof, China Express Railway (Line for Passenger Transportation) had very crucial effect when constructing in the winter time, because if the mortar of cast can not reach the above intensity of 20MPa rapidly, perhaps can not obtain comprehensive maintenance, under the subzero temperature condition, all bridge engineering all must stop so;
10, according to 900 tons of precast beam erecting process of high-speed railway, must could begin setting up of a slice beam down in the compressive strength that mortar reaches 20MPa, the present invention adopts the conduction of heat mode of heating of full heating, can make mortar reach the compressive strength of 20MPa in 2 hours, guarantees the progress of constructing.
Description of drawings
Fig. 1 is the scheme of installation of concrete pier base, bearing pad stone, bridge pad, concrete-bridge;
Fig. 2 is the preceding template scheme of installation of cast;
Cross-sectional schematic when Fig. 3 is cast;
Fig. 4 is the structural representation of bridge pad;
Fig. 5 is the schematic top plan view after the bearing pad stone end face mounting template.
The specific embodiment
The present invention will be described in detail below in conjunction with accompanying drawing.
Description of reference numerals is as follows:
1---concrete pier base 2---bearing pad stone
3---concrete-bridge 4---neoprene bearing
5---punching block 6---rubber leakproof bar
7---expansion bolt 8---bridge pad lower steel plate
9---bolt 10---sleeve
11---anchor hole
As Fig. 4, shown in Figure 5, this embodiment is at beginning erecting beam or before pouring into a mould cast-in-place beam, heating bag is installed in the upper surface position of 8 four jiaos of bridge pad lower steel plates and heats, the periphery coats whole bridge pad or bearing lower part with heat insulating material, bolt 9 and sleeve 10 are put into muff, and put into heating bag and heat, heating bag is put into pier anchor hole 11 to be heated, heating bag is placed on the bearing pad stone 2 heats, and on heating bag, cover the heatproof heat insulating material, to heating the regular hour with the upper part, after beam body or bridge pad are in place, use ribbon heater or heating bag to heat to mixer, use hot water to stir mortar, coat heat insulating material to mortar mozzle outer coating heat insulating material or after twining the heating tape earlier as mixing water, then according to certain process cast mortar, mortar cast finishes, and mortar is continued maintenance, more than intensity reaches 20MPa or when possessing freeze proof ability till.
Its concrete processing step is:
(1) at first bearing pad stone 2 and anchor hole 11 are preheated, it is preceding after watering on anchor hole 11 and the bearing pad stone 2 is moistening to set a roof beam in place, in each anchor hole 11, put into heating bag respectively, heating bag is full of the volume of whole anchor hole more than 60%, anchor hole is evenly heated, on whole bearing pad stone 2, place heating bag then, on the bearing pad stone heating bag, cover the high-temperature-resistant thermal-insulation cotton at last, keep the heating bag temperature about 40 ℃～60 ℃, before the beam that falls, cut off the power supply, take out all heating bags then, and heat-preservation cotton is continued covering and heat insulating, remove heat-preservation cotton when erection bolt 9 and sleeve 10 again;
(2) sleeve 10 and the bolt 9 to the bridge pad lower steel plate preheats, before the beam that falls, sleeve 10 and bolt 9 are put into muff, in muff, place heating bag then, keep the interior temperature of heating jacket between 40 ℃～60 ℃, in the mobile or erection process of beam, keep heating jacket in running order always;
(3) bridge pad lower steel plate 8 is heated, respectively heating bag is installed in the Si Jiaochu of bridge pad lower steel plate upper surface, and be fixed on the bearing, outside bridge pad, coat insulation blanket then, and begin heating by magnet or rope band;
(4) after the beam body sets up, carrying out slurry as early as possible stirs, mixer directly is placed on the Liang Tishang that is set up, when stirring mortar, mixer is carried out heat tracing, and the mortar mozzle heated or be incubated, the mixer outer lower portion is divided or is all twined heating bag, the heating tape has temperature automatically controlled function, automatically cut off the power supply after surpassing certain temperature, temperature heats when not enough automatically, and, when stirring,, heat the outer field metallic walls of mixer with the heating tape with 40 ℃～60 ℃ hot water injection's mixer and pipeline at heating tape skin coating high-temperature-resistant thermal-insulation material, draft-tube diameter and coats heat insulating material again after skin coats heat insulating material or twines heating bag about 80mm;
(5) stir slurry, use about 20 ℃～30 ℃ hot water to mix and stir material, the slurry out-of-machine temperature is advisable at 15 ℃～25 ℃, generally is not less than 10 ℃;
(6) cast, slurry stirring finishing back was poured into a mould in 20 minutes and is finished, and simultaneously with the plural die trial of mortar moulding of stirring, put into the muff test compressive strength in the different length of times;
(7) pouring into a mould follow-up the continuing that finish heats bridge pad, the muff lower end that is fixed on the bridge pad is sturdy on bearing pad stone 2, coat fully bridge pad lower steel plate, cast mortar and fixedly mortar go along with sb. to guard him template, avoid the interior air of muff to communicate with the external world as far as possible, reduce thermal loss, by heating bridge pad lower steel plate 8, indirect heating mortar and all parts or the material that are coated on heat insulating material inside reach 10 ℃-30 ℃ curing temperature;
(8) it is above or possess the maintenance that anti-freezing property can be cancelled heating bag in the heating jacket to treat that die trial mortar compressive strength reaches 20MPa, finishes whole pouring technology, and the pour mass main performance index is as shown in the table after tested.
| Sequence number | Project | |
| 1 | Bleeding rate/% | 0 |
| 2 | Degree of mobilization (initially) | ≥320 |
| Degree of mobilization (maintenance of 30min degree of mobilization) | ≥240 | |
| 3 | Compressive strength/MPa (2h) | ≥20 |
| Compressive strength/MPa (1d) | ≥40 | |
| Compressive strength/MPa (28d) | ≥50 | |
| Rupture strength/MPa (2h) | ≥3.0 |
| 4 | Rupture strength/MPa (1d) | ≥10.0 |
| Rupture strength/MPa (28d) | ≥10.0 | |
| 5 | Elastic modulus G Pa | ≥30 |
| 6 | Full property | Meet standard |
| 7 | Crack resistance | Nothing is greater than harmful crack of 0.2mm |
In addition, support grouting to cast-in-place beam also can adopt this method, because cast-in-place beam is to begin to pour into a mould bridge after bearing is cast in the pier pinner again, therefore changing part is to cover heating bag at the bridge pad surface of steel plate, and the heating bag surface covers the high-temperature-resistant thermal-insulation material again.
More than low temperature construction method for bridge support grouting provided by the present invention is described in detail; used specific case herein principle of the present invention and embodiment have been done elaboration; the explanation of these embodiment just is used for helping to understand method of the present invention and core concept thereof; simultaneously for one of ordinary skill in the art; according to thought of the present invention; part in specific embodiments and applications all can change; no matter but do what kind of variation; every have identical with a present invention or akin technical scheme, all within its protection domain.
Claims (9)
1, a kind of low temperature construction method for bridge support grouting, its processing step is as follows:
(1) at first bearing pad stone and anchor hole are preheated, it is preceding after watering on anchor hole and the bearing pad stone is moistening to set a roof beam in place, in each anchor hole, put into heating bag respectively, on whole bearing pad stone, place heating bag then, on the bearing pad stone heating bag, cover the high-temperature-resistant thermal-insulation material at last, as heat-preservation cotton, keep the heating bag temperature about 10 ℃～80 ℃, before the beam that falls, cut off the power supply, take out all heating bags then, and heat-preservation cotton continued covering and heat insulating, remove heat-preservation cotton when erection bolt and sleeve again;
(2) sleeve and the bolt to the bridge pad lower steel plate preheats, before the beam that falls, sleeve and bolt are put into muff, in muff, place heating bag then, keep the interior temperature of heating jacket between 10 ℃～80 ℃, in the mobile or erection process of beam, keep heating jacket in running order always;
(3) the bridge pad lower steel plate is heated, respectively heating bag is installed in the Si Jiaochu of bridge pad lower steel plate upper surface, and is fixed on the steel plate, coat insulation blanket then outside bridge pad, and begin heating, the temperature of heating bag is between 10 ℃～80 ℃;
When (4) stirring mortar, mixer is carried out heat tracing, and the mortar mozzle is heated or is incubated;
(5) stir slurry, use about 10 ℃～50 ℃ hot water to mix and stir material, the slurry out-of-machine temperature is advisable at 5 ℃～30 ℃, minimumly is not less than 1 ℃;
(6) cast, slurry stirring finishing back was poured into a mould in 30 minutes and is finished, and simultaneously with the plural die trial of mortar moulding of stirring, put into the muff test compressive strength in the different length of times;
(7) pouring into a mould follow-up the continuing that finish heats the bridge pad lower steel plate, the muff lower end that is fixed on the bridge pad is sturdy on bearing pad stone, coat the lower steel plate of bridge pad, the mortar of cast and the template of going along with sb. to guard him of pouring into a mould mortar fully, avoid the interior air of muff to communicate with the external world as far as possible, reduce thermal loss, by heating bridge pad lower steel plate, indirect heating mortar and all parts or the material that are coated on heat insulating material inside reach 5 ℃-60 ℃ curing temperature;
(8) it is above or possess the maintenance that anti-freezing property can be cancelled heating bag in the heating jacket to treat that die trial mortar compressive strength reaches 20MPa.
2, low temperature construction method for bridge support grouting according to claim 1 is characterized in that, in the described step (1), heating bag is full of the volume of whole anchor hole more than 60%, and heating bag contacts with the crab-bolt hole wall, thereby anchor hole is evenly heated.
3, low temperature construction method for bridge support grouting according to claim 1 is characterized in that, in the described step (4), after the beam body sets up, carries out slurry as early as possible and stirs, and mixer directly is placed on the Liang Tishang that is set up.
4, low temperature construction method for bridge support grouting according to claim 3, it is characterized in that, in the described step (4), the mixer outer lower portion is divided or is all twined heating tape or thin layer heating bag, heating tape and heating bag have temperature automatically controlled function, and above outage automatically after certain temperature, temperature heats when not enough automatically, and at heating tape skin coating high-temperature-resistant thermal-insulation material, the temperature range of heating tape and heating bag is between 10 ℃-60 ℃.
5, low temperature construction method for bridge support grouting according to claim 4, it is characterized in that, in the described step (4), when stirring with 20 ℃～60 ℃ hot water injection's mixer and pipeline, with the outer field metallic walls of heating tape heating mixer, draft-tube diameter is advisable about 50-100mm, and coats heat insulating material again after skin coats heat insulating material or twines heating bag, and the temperature range of heating tape and heating bag is between 5 ℃-60 ℃.
6, low temperature construction method for bridge support grouting according to claim 1 is characterized in that, in the described step (3), when the bridge pad lower steel plate was heated, heating bag was adsorbed on the steel plate by magnet, perhaps is fixed on the bridge pad with rope band.
According to the arbitrary described low temperature construction method for bridge support grouting of claim 1 to 6, it is characterized in that 7, described heating bag and the temperature that is heated parts are no more than 80 ℃.
According to the arbitrary described low temperature construction method for bridge support grouting of claim 1 to 6, it is characterized in that 8, described heating bag adopts the heating bag with temperature automatically controlled function, start heating when temperature is hanged down automatically, cutting off the power supply automatically when temperature is too high stops heating.
9, according to the arbitrary described low temperature construction method for bridge support grouting of claim 1 to 6, it is characterized in that, the Heat Conduction Material that charges in the described heating bag is a liquid, heating source is sealed in the bag, heating bag is soft deformable material, can adapt to the shape of anchor hole, bridge pad and bearing pad stone automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610145116XA CN100432339C (en) | 2006-11-13 | 2006-11-13 | Low temperature construction method for bridge support grouting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610145116XA CN100432339C (en) | 2006-11-13 | 2006-11-13 | Low temperature construction method for bridge support grouting |
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| CN1944798A true CN1944798A (en) | 2007-04-11 |
| CN100432339C CN100432339C (en) | 2008-11-12 |
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| CNB200610145116XA Expired - Fee Related CN100432339C (en) | 2006-11-13 | 2006-11-13 | Low temperature construction method for bridge support grouting |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100557136C (en) * | 2007-07-31 | 2009-11-04 | 中铁二局股份有限公司 | The 600t supporting gravity type grouting construction method |
| CN101545246B (en) * | 2009-05-05 | 2010-11-10 | 中国铁道科学研究院铁道建筑研究所 | Method for constructing support grouting material in winter |
| CN102011368A (en) * | 2010-11-10 | 2011-04-13 | 中国一冶集团有限公司 | One-time molding construction method for vase-shaped columnar pier of viaduct |
| CN101694087B (en) * | 2009-10-13 | 2011-05-11 | 毕承会 | Method for building novel bridge |
| CN102359073A (en) * | 2011-08-03 | 2012-02-22 | 中铁四局集团第五工程有限公司 | Grouting template structure for support of concrete simple-supported box girder |
| CN103161123A (en) * | 2013-03-11 | 2013-06-19 | 浙江海天建设集团有限公司 | Installation structures of piled layer rubber support and flat plate sliding support |
| CN106567340A (en) * | 2016-11-09 | 2017-04-19 | 中交路桥华东工程有限公司 | Tower beam temporary solidification supporting structure |
| CN110359456A (en) * | 2019-08-16 | 2019-10-22 | 中国电建集团成都勘测设计研究院有限公司 | Assembling provisions for grouting applied to cooling water pipe peripheral temperature seam |
| CN114319092A (en) * | 2022-01-14 | 2022-04-12 | 中国铁建大桥工程局集团有限公司 | Connecting device, bridge and mounting method of connecting device |
| CN114657897A (en) * | 2022-02-19 | 2022-06-24 | 中铁二十局集团第六工程有限公司 | Heat-insulating construction method for suspension cast beam in alpine region |
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| US3948008A (en) * | 1973-06-25 | 1976-04-06 | Werner Goetz | Prefabricated structural element, especially balcony element |
| DE3124038C2 (en) * | 1981-06-19 | 1985-03-07 | Philipp Holzmann Ag, 6000 Frankfurt | Method and device for producing structures such as bridges using precast concrete girders |
| KR930010214B1 (en) * | 1991-11-23 | 1993-10-15 | 김선자 | Connecting method of precast concrete member |
| KR0137849B1 (en) * | 1994-01-12 | 1998-07-01 | 진화기술공사 | How to connect concrete structure by heating curing |
| CN100999895A (en) * | 2006-10-24 | 2007-07-18 | 邹煜 | Longspan bridge erecting apparatus and erecting method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100557136C (en) * | 2007-07-31 | 2009-11-04 | 中铁二局股份有限公司 | The 600t supporting gravity type grouting construction method |
| CN101545246B (en) * | 2009-05-05 | 2010-11-10 | 中国铁道科学研究院铁道建筑研究所 | Method for constructing support grouting material in winter |
| CN101694087B (en) * | 2009-10-13 | 2011-05-11 | 毕承会 | Method for building novel bridge |
| CN102011368A (en) * | 2010-11-10 | 2011-04-13 | 中国一冶集团有限公司 | One-time molding construction method for vase-shaped columnar pier of viaduct |
| CN102359073A (en) * | 2011-08-03 | 2012-02-22 | 中铁四局集团第五工程有限公司 | Grouting template structure for support of concrete simple-supported box girder |
| CN103161123A (en) * | 2013-03-11 | 2013-06-19 | 浙江海天建设集团有限公司 | Installation structures of piled layer rubber support and flat plate sliding support |
| CN106567340A (en) * | 2016-11-09 | 2017-04-19 | 中交路桥华东工程有限公司 | Tower beam temporary solidification supporting structure |
| CN110359456A (en) * | 2019-08-16 | 2019-10-22 | 中国电建集团成都勘测设计研究院有限公司 | Assembling provisions for grouting applied to cooling water pipe peripheral temperature seam |
| CN114319092A (en) * | 2022-01-14 | 2022-04-12 | 中国铁建大桥工程局集团有限公司 | Connecting device, bridge and mounting method of connecting device |
| CN114657897A (en) * | 2022-02-19 | 2022-06-24 | 中铁二十局集团第六工程有限公司 | Heat-insulating construction method for suspension cast beam in alpine region |
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